 |
| |||
| effluent sewerage | |||
| 下水道 污水: 34 phrases in 9 subjects |
| Agriculture | 2 |
| Architecture | 1 |
| Construction | 1 |
| Ecology | 3 |
| Hydroelectric power stations | 1 |
| Metallurgy | 3 |
| Technology | 20 |
| Textile industry | 1 |
| Water resources | 2 |
|
| |||
| effluent sewerage | |||
| 下水道 污水: 34 phrases in 9 subjects |
| Agriculture | 2 |
| Architecture | 1 |
| Construction | 1 |
| Ecology | 3 |
| Hydroelectric power stations | 1 |
| Metallurgy | 3 |
| Technology | 20 |
| Textile industry | 1 |
| Water resources | 2 |